Bluetooth: L2CAP: Increase disconnect timeout to 2 seconds
Bluetooth: L2CAP: Increase disconnect timeout to 2 seconds

There have been situations where the remote stacks cannot responds
within a second, so increases it to 2 seconds. The timeout has to be
relatively short as the channel cannot be reused while disconnecting.

Signed-off-by: Luiz Augusto von Dentz <8530c5ea66a1bdbc08f98bfcf183c8be901b5990@intel.com>

galak/zephyr,zephyrproject-rtos/zephyr,mbolivar/zephyr,aceofall/zephyr-iotos,Vudentz/zephyr,galak/zephyr,finikorg/zephyr,nashif/zephyr,fbsder/zephyr,mbolivar/zephyr,aceofall/zephyr-iotos,GiulianoFranchetto/zephyr,Vudentz/zephyr,mbolivar/zephyr,kraj/zephyr,zephyriot/zephyr,punitvara/zephyr,zephyrproject-rtos/zephyr,punitvara/zephyr,GiulianoFranchetto/zephyr,fbsder/zephyr,fbsder/zephyr,Vudentz/zephyr,zephyriot/zephyr,explora26/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,finikorg/zephyr,zephyriot/zephyr,nashif/zephyr,kraj/zephyr,GiulianoFranchetto/zephyr,explora26/zephyr,punitvara/zephyr,Vudentz/zephyr,aceofall/zephyr-iotos,kraj/zephyr,ldts/zephyr,finikorg/zephyr,ldts/zephyr,nashif/zephyr,explora26/zephyr,kraj/zephyr,zephyrproject-rtos/zephyr,punitvara/zephyr,ldts/zephyr,zephyriot/zephyr,explora26/zephyr,nashif/zephyr,mbolivar/zephyr,ldts/zephyr,galak/zephyr,GiulianoFranchetto/zephyr,finikorg/zephyr,kraj/zephyr,mbolivar/zephyr,aceofall/zephyr-iotos,explora26/zephyr,ldts/zephyr,nashif/zephyr,galak/zephyr,galak/zephyr,GiulianoFranchetto/zephyr,Vudentz/zephyr,punitvara/zephyr,zephyrproject-rtos/zephyr,fbsder/zephyr,fbsder/zephyr,zephyriot/zephyr,aceofall/zephyr-iotos,finikorg/zephyr